diff --git a/java/src/com/android/inputmethod/keyboard/Keyboard.java b/java/src/com/android/inputmethod/keyboard/Keyboard.java
index 53467122abcb21e0df2a602dfa96d00552cca6ae..b7f1ddde6dcbb255ba4dd15b3a944152d4c311ea 100644
--- a/java/src/com/android/inputmethod/keyboard/Keyboard.java
+++ b/java/src/com/android/inputmethod/keyboard/Keyboard.java
@@ -154,7 +154,7 @@ public class Keyboard {
         mIconsSet = params.mIconsSet;
         mAdditionalProximityChars = params.mAdditionalProximityChars;
 
-        mProximityInfo = new ProximityInfo(
+        mProximityInfo = new ProximityInfo(params.mId.mLocale.toString(),
                 params.GRID_WIDTH, params.GRID_HEIGHT, mOccupiedWidth, mOccupiedHeight,
                 mMostCommonKeyWidth, mMostCommonKeyHeight, mKeys, params.mTouchPositionCorrection,
                 params.mAdditionalProximityChars);
diff --git a/java/src/com/android/inputmethod/keyboard/ProximityInfo.java b/java/src/com/android/inputmethod/keyboard/ProximityInfo.java
index 13d18e55a3ce873256228f21ff9d6c8c75e397b9..8a65a5fc6a910ad673acdc25bd9abb88ef5d86d0 100644
--- a/java/src/com/android/inputmethod/keyboard/ProximityInfo.java
+++ b/java/src/com/android/inputmethod/keyboard/ProximityInfo.java
@@ -17,6 +17,7 @@
 package com.android.inputmethod.keyboard;
 
 import android.graphics.Rect;
+import android.text.TextUtils;
 
 import com.android.inputmethod.keyboard.Keyboard.Params.TouchPositionCorrection;
 import com.android.inputmethod.latin.JniUtils;
@@ -46,10 +47,17 @@ public class ProximityInfo {
     private final int mKeyboardHeight;
     private final int mMostCommonKeyWidth;
     private final Key[][] mGridNeighbors;
+    private final String mLocaleStr;
 
-    ProximityInfo(int gridWidth, int gridHeight, int minWidth, int height, int mostCommonKeyWidth,
+    ProximityInfo(String localeStr, int gridWidth, int gridHeight, int minWidth, int height,
+            int mostCommonKeyWidth,
             int mostCommonKeyHeight, Set<Key> keys, TouchPositionCorrection touchPositionCorrection,
             Map<Integer, List<Integer>> additionalProximityChars) {
+        if (TextUtils.isEmpty(localeStr)) {
+            mLocaleStr = "";
+        } else {
+            mLocaleStr = localeStr;
+        }
         mGridWidth = gridWidth;
         mGridHeight = gridHeight;
         mGridSize = mGridWidth * mGridHeight;
@@ -69,7 +77,7 @@ public class ProximityInfo {
     }
 
     public static ProximityInfo createDummyProximityInfo() {
-        return new ProximityInfo(1, 1, 1, 1, 1, 1, Collections.<Key> emptySet(),
+        return new ProximityInfo("", 1, 1, 1, 1, 1, 1, Collections.<Key> emptySet(),
                 null, Collections.<Integer, List<Integer>> emptyMap());
     }
 
@@ -155,7 +163,7 @@ public class ProximityInfo {
             calculateSweetSpotParams = false;
         }
 
-        mNativeProximityInfo = setProximityInfoNative("", MAX_PROXIMITY_CHARS_SIZE,
+        mNativeProximityInfo = setProximityInfoNative(mLocaleStr, MAX_PROXIMITY_CHARS_SIZE,
                 keyboardWidth, keyboardHeight, mGridWidth, mGridHeight, mMostCommonKeyWidth,
                 proximityCharsArray,
                 keyCount, keyXCoordinates, keyYCoordinates, keyWidths, keyHeights, keyCharCodes,